Description
LOW OPENING RELAY VALVE (LOV-4, 1.5 PSI CRACK)
PART NUMBER(S):
Fleet Products: 110380-G (New) | OE: Sealco 110380 | Haldex 110380X | Meritor RSL110380 | S-17739 | Automann 170.110380 | 170.110360
DESCRIPTION:
Model: LOV-4 (Low Opening Service Relay Valve – 4 Port)
Vehicles: Tandem axle trailers with service brake chambers
• Crack Pressure: 1.5 PSI (low-opening)
• Control Port: 3/8" NPT
• Delivery Ports: (4) × 3/8" NPT
• Reservoir Port: 3/4" NPT
• Mounting: Nipple mount (6003 or 6006)
• Body: Aluminum housing for light weight and corrosion resistance
• SAE J1860 Tag: RV015
Applications:
Is this the right relay valve for your trailer? Yes—if you’re running a tandem axle setup that needs quicker brake response. The 110380-G Low Opening Valve delivers air at just 1.5 PSI, providing faster and more balanced service brake activation for trailers with multiple axle chambers. Not for converter dollies or lift axles requiring higher crack pressures.
CROSS-REFERENCE(S):
110380, 110380X, 110380XBXR, 110380SEA, 110365, 110360, 110380PTP, 110380P, 110380R, 680-110380, 0587-110380P, 401131, 51442, 39540343, 55110380, 321246, 14524, RV015, P130102, A103600, A103600X, A103605, A103610, E-SL110380, ESL110380, ESL110380X, RSL110380, RSL110380X, S-17739, S17739, SEA-110380, SE0110380, SEA110380, SEA110380X, TDARSL110380, TV110380, AV110380, AM170110380, AM170110360, 170.110380, 170.110360, K110380, K110380X, 802609E, 39540343, 51442, 401131, 55110380, 680502106143, MERITOR VMRS 013-010-399.
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all port sizes and the 1.5 PSI crack specification match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Use only on tandem axle trailers requiring low-opening valves (1.5 PSI crack).
✔ Verify control (3/8"), delivery (3/8"), and reservoir (3/4") port sizes match existing plumbing.
✔ Torque fittings to OEM specifications and perform a leak test after installation.
✔ Do not use on converter dollies, turntable axles, or lift axles.
✔ No repair kits available – replace valve as a complete unit.
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Warranty Information
